<computer>Plankalkül on the Z3. Programs were punched into cinefilm. Zuse built some more computers after World War II, including the Z3's successor, the Z4, which was set up at ETH Zurich, Switzerland. Of the potential rival claimants to the title of first programmable computer, Babbage (UK, c1840) planned but was not able to build a decimal, programmable machine. Atanasoff's ABC, completed in 1942 was a special purpose calculator, like those of Pascal (1640) and Leibniz (1670). Eckert and Mauchly's ENIAC (US), as originally released in 1946, was programmable only by manual rewiring or, in 1948, with switches. None of these machines was freely programmable. Neither was Turing et al.'s Colossus (UK, 1943-45). Aiken's MARK I (1944) was programmable but still decimal, without separation of storage and control. [Features? Where was it designed? Contemporaries?] http://cs.tu-berlin.de/~zuse. http://epemag.com/zuse.
Last updated: 2003-10-01